I think that you and I have similar views on things like CIO and sleep trainings.
A couple weeks ago - I modified the No Cry Sleep Solution night weaning, to manage to partial night wean Natalie with actually no crying. It took a couple nights - but there were no tears (less on my part that normal ) Once she was partially night weaned (from when she went to sleep until about 4am - unless it's a bad night) she's started sleeping through that time without waking up. Before she was waking every ~2 hours.
Anyway - if you're interested I can share what I did.
We're still co-sleeping, and night nursing, but last night she slept for 7 hours in a row - and that was really nice.